That is an excellent point Judy that i had overlooked. The heating pads are different sizes which is why they can't equal in temperature I suppose.

I'm looking to get a thermostat now and I like the Herpstat but I was also looking at the Ranco. Has anyone used the Ranco and like it? They seem pretty similar except the Herpstat has a few more features and also cost more.

I'll figure something out until the snakes are the same size and need the same size heating pad